MagickCore  6.9.7
random-private.h
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1 /*
2  Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization
3  dedicated to making software imaging solutions freely available.
4 
5  You may not use this file except in compliance with the License.
6  obtain a copy of the License at
7 
8  http://www.imagemagick.org/script/license.php
9 
10  Unless required by applicable law or agreed to in writing, software
11  distributed under the License is distributed on an "AS IS" BASIS,
12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  See the License for the specific language governing permissions and
14  limitations under the License.
15 
16  MagickCore random generation private methods.
17 */
18 #ifndef MAGICKCORE_RANDOM_PRIVATE_H
19 #define MAGICKCORE_RANDOM_PRIVATE_H
20 
21 #include "magick/thread-private.h"
22 
23 #if defined(__cplusplus) || defined(c_plusplus)
24 extern "C" {
25 #endif
26 
29 {
30  register ssize_t
31  i;
32 
33  assert(random_info != (RandomInfo **) NULL);
34  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
35  if (random_info[i] != (RandomInfo *) NULL)
36  random_info[i]=DestroyRandomInfo(random_info[i]);
37  return((RandomInfo **) RelinquishAlignedMemory(random_info));
38 }
39 
41 {
42  register ssize_t
43  i;
44 
46  **random_info;
47 
48  size_t
50 
51  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
52  random_info=(RandomInfo **) AcquireAlignedMemory(number_threads,
53  sizeof(*random_info));
54  if (random_info == (RandomInfo **) NULL)
55  return((RandomInfo **) NULL);
56  (void) ResetMagickMemory(random_info,0,number_threads*sizeof(*random_info));
57  for (i=0; i < (ssize_t) number_threads; i++)
58  {
59  random_info[i]=AcquireRandomInfo();
60  if (random_info[i] == (RandomInfo *) NULL)
61  return(DestroyRandomInfoThreadSet(random_info));
62  }
63  return(random_info);
64 }
65 
66 extern MagickExport unsigned long
68 
69 extern MagickExport double
71 
72 #if defined(__cplusplus) || defined(c_plusplus)
73 }
74 #endif
75 
76 #endif
static RandomInfo ** DestroyRandomInfoThreadSet(RandomInfo **random_info)
Definition: random-private.h:27
MagickExport double GetRandomInfoNormalize(const RandomInfo *)
Definition: random.c:654
static RandomInfo ** AcquireRandomInfoThreadSet(void)
Definition: random-private.h:40
Definition: random.c:76
MagickExport RandomInfo * DestroyRandomInfo(RandomInfo *random_info)
Definition: random.c:272
MagickExport void * ResetMagickMemory(void *memory, int byte, const size_t size)
Definition: memory.c:1129
MagickExport void * RelinquishAlignedMemory(void *memory)
Definition: memory.c:961
MagickExport RandomInfo * AcquireRandomInfo(void)
Definition: random.c:160
MagickExport MagickSizeType GetMagickResourceLimit(const ResourceType type)
Definition: resource.c:686
MagickExport void * AcquireAlignedMemory(const size_t count, const size_t quantum)
Definition: memory.c:237
size_t number_threads
Definition: quantum-private.h:67
Definition: resource_.h:33
static RandomInfo * random_info
Definition: resource.c:108
#define MagickExport
Definition: method-attribute.h:98
MagickExport unsigned long * GetRandomInfoSeed(RandomInfo *)
Definition: random.c:682